PCB 3063 – PRODUCTION ENGINEERING I

SEMESTER 5

ByBy

Dr. Aliyu Adebayo Sulaimon(aliyu.adebayor@petronas.com)

DISCUSSIONS

–

Getting to know each other

Important Information

Outcome Based Education (OBE) Structure of the course (outlines/contents) Lesson plan (Micro-teaching, lecture, buzz-group, chalk and talk, etc.)

Teaching evaluation (Anonymous feedbacks) UTP attendance policy (University required to present monthly

report on the international attendance to MOHE – Min. of Higher Educ.)

Assessment plan Attendance Assignment/Classwork Test/Quiz Exam

Course Major Contents

Overview of well performance concepts

Nodal analysis

Well stimulation concepts

Artificial lift methods

Contents (Cont’d)

Overview of well performance concepts

Flow regimes in a reservoir Darcy’s equation Skin effect Skin effect Productivity Index (PI or J) Inflow Performance Relationship (IPR) Factors Influencing Inflow Performance

Assignments and Review

Nodal analysis

System components Flow regimes in vertical pipes

Contents (Cont’d)

Flow regimes in vertical pipes Construction of Outflow curves Application of nodal analysis in tubing sizing

Assignments and Review

Contents (Cont’d)

Well stimulation concepts

Introduction – (reasons for stimulating) Candidate selection Candidate selection Stimulation techniques

Assignments and Review

Contents (Cont’d)

Artificial lift methods

Bean pumping Electrical submersible pumping (ESP) Electrical submersible pumping (ESP) Gas lift Progressive cavity pump Hydraulic pumping

Assignments and Review

References Lake, L.W. (2007): ‘Petroleum Engineering Handbook’, SPE Richardson

Gray, F. (1995): Petroleum Production in Non-Technical Language’, Second Edition, Pennwell Corporation

Cholet, H. (2000): ‘Well Production Practical Handbook’, Technip

Economides, M.J.; Hill, A.D.; and Ehlig-Economides, C. (2008): ‘Petroleum Production Economides, M.J.; Hill, A.D.; and Ehlig-Economides, C. (2008): ‘Petroleum Production System’, Prentice-Hall PTR

Guo, B.; Lyons, W.C.; and Ghalambor, A. ((2007): ‘Petroleum Production Engineering’, Elseviers’ Gulf Professional Publishing, Oxford, U.K

Allen, T.O. and Roberts, A.P. (2004): ‘Production Operations 1 and 2’, Fourth Edition, OGCI and PetroSkills Publications,

Beggs, H.D. (1991): ‘Production Optimization Using Nodal Analysis’. OGCI Publication

Lecture 1 – Introduction

Review of Basic Concepts

Learning Outcomes

At the end of this class, students should be able to:

Describe the flow regimes in a reservoir

Mathematically differentiate between the flow regimes Mathematically differentiate between the flow regimes

Illustrate graphical representation of pressure vs radial distance at different times for each of the flow regimes

Define ‘skin effect’ and describe its main contributors

Review Topics

Types of Flow

Transient flow (Infinite acting reservoir)

Steady state (CPB exists) Steady state (CPB exists)

Pseudo-steady state (NFB exists)

Concept of skin

Flow regimes in a reservoirPr

essu

re (p

si) Transient Late

transient

Pres

sure

(psi

)

Time (hr)

Steady state

Pseudo-steady state

Class Attempt:

Can you sketch the Pressure (P) vs Radial Can you sketch the Pressure (P) vs Radial Distance (r) Curve for each of the flow regimes?

Pressure vs Drainage Radius Profiles for Different Time Intervals (Steady State Flow)

Pres

sure

(psi

)Pr

essu

re (p

si)

Radial distance (ft)

Profiles of Pressure vs Drainage Radius at Different Time Intervals (Transient Flow)Pr

essu

re (p

si)

Pres

sure

(psi

)

Radial distance (ft)

Profiles of Pressure vs Drainage Radius at Different Time Intervals (Pseudo-Steady Flow)

Pres

sure

(psi

)Pr

essu

re (p

si)

Radial distance (ft)

The Concept of Skin Actual pressure drop higher than calculated

Skin is related to any permeability impairment due to wellbore damage caused by drilling, completion or even production operations

Skin Factor (S.F) – a numerical value which can indicate the extent of damage or permeability improvement at the wellbore

S.F can be positive (i.e. damage) or negative (i.e. stimulated)

Types of Skin

Corrected Darcy’s equation

Review Questions (T/F)

There are four flow regimes in a reservoir system A well is producing in pseudo-steady state when the

pressure pulse is felt in all the boundaries of the drainage areadrainage area

For a reservoir bounded by an aquifer, the rate of change of pressure at the boundary is constant

A zero skin factor indicates that the wellbore is partially stimulated rather than damaged

ASSIGNMENT 1

Questions?

Thank youThank you